hag an



( o Model.)

L. T.HAGAN. LATHING STRIP.

No; 531,589. Patented Dec. 25, 1894.

m: Nomus PETERS co moYoumu, wA summu o. c.

UNITE STATES PATENT OFFI E.

LOUIS T. HAGAN, OF WINCHESTER, KENTUCKY, ASSIGNOR OF ONE-HALF TO SAMUEL A. CONN, OF SAME PLACE.

LATHlNG-STRlPL SPECIFICATION forming part of Letters Patent No. 531,589, dated December 25, 189 1.

7 Application filed March 27,1894; Serial No. 505,305. (No model.)

To all whom it may concern:

Be it known that I, LOUIS T. HAGAN, a citizen of the United States, residing at Winchester, in the county of Clark and State of 5 Kentucky, have invented new and useful Improvements in Lathing-Strips, of which the following is a specification.

My invention relates to and consists in certain improvements in wooden lathing, the

[O purpose of said invention being to provide a construction of such character that the lath strip may be made of very thin lumber without materially impairing its strength or producing a tendency to crack, or split, and by A :5 which the plaster will key upon,or adhere to,

the lath with great strength while the quantity required for plastering a given area is considerably diminished and the swelling and shrinking of the lathing is efiectually coun- 2o teracted.

To enable others to fully understand and to make and use my said invention, I will proceed to describe the same in detail,'reference being had for this purpose, to the accom- 2 5 panying drawings, in which- Figure 1 is a front view, or face elevation, of a portion of lathing constructed in accordance with my invention. Fig. -2 is a transverse section of the same. Fig. 3 is a detail view, upon an enlarged scale, showing more fully the form and relative arrangement of the grooves formed in the lathing.

The reference-numeral 1, in the said drawings, indicates a portion of a strip of lathing 3 consisting of a comparativelythin piece of lumber of suitable quality. In the outer face of said strip are formed a plurality of series of curved grooves, or channels, 2, of suitable width, each series being arranged in a line substantially parallel with the edges of the strip. The individual channels 2 are out upon comparatively short radii andthey have two characteristic features, viz: their greatest depth is at the center of the groove, from 5 which point they rapidly decrease in depth toward the ends, and the two parallel, curved walls of each channel are so cut as to lie, one at an acute and the other at an obtuse angle with the face of the strip. The curved 5o grooves, or channels 2, in each longitudinal series are so located that their ends lie close together, though a moderate interval of separation'may be allowed, if preferred.

The grooves, or channels 2, in one longitudinal series are so arranged as to alternate 5 5 with those in the next adjacent series, and the curvature of each longitudinal series is opposite to that of either, or both, the adja cent series. Finally, the angularity of any one line of said channels is the opposite, or reverse, of that of the adjacent line, orlines.

In other words, the acute and oblique angles which the walls 3 and 4 of each channel make with the face of the strip, are opposite, in direction of inclination and in augularity to the face, of the corresponding walls of any channel 2 in anadjacent line, or longitudinal series. 0

By curving the channels 2 and cutting them in different and alternating longitudinal series, I avoid weakening the lathing and obviate the tendency to split and crack under moderate strain, as the points of deepest out are distributed over the whole surface of the strip, and in such manner that considerable intervals of almost maximum thickness and strength intervene. Thus the channels may, if desired, be cut entirely through the strip, at the deepest points, without impairing the necessary strength of the lath, which may, for this reason, be made of thinner lumber than has heretofore been thought available.

The opposite curvature and angularity of alternate longitudinal series of channels en-' able the strip to be used either side up, and the plaster is more strongly keyed to the strip. Moreover, by the employment of successive curved channels in contradistinction to continuous channels, less plaster is required to cover a given area of lathing, and the swell- 9o ing and shrinking of the strip is prevented.

What I claim is l. A lathing-strip having a plurality of curved grooves or channels arranged in longitudinal series that are substantially parallel 5 with each other, the depth of each groove tudinal series that are substantially parallel alternating with each other and the depth of with each other, the adjacent grooves in each each groove increasing from its ends toward series having their ends close together and the center, substantially as described. the depth of each groove being increased from In testimony whereof I have hereunto set 5 its ends toward its center, substantially as my hand and affixed'my seal in presence of 1 described. two subscribing witnesses.

3. A lathing-strip having a plurality of LOUIS T. ITAGAN. [L. s] curved grooves or channels arranged in par- Witnesses: allel longitudinal series, the grooves in adja- W. T. FOX,

10 cent series being of opposite curvature and FRED BROADHURST. 

